/**
   * Asynchronously runs the Proton {@link Reactor} accepting and sending messages. Any other call
   * to this method on this {@link AmqpsIotHubConnection} will block until the {@link Reactor}
   * terminates and this {@link AmqpsIotHubConnection} closes. Normally, this method should only be
   * called once by the {@link #open()} method until the {@link AmqpsIotHubConnection} has been
   * closed.
   *
   * @throws IOException if the {@link AmqpsIotHubConnectionBaseHandler} has not been initialized.
   * @throws InterruptedException if there is a problem acquiring the semaphore.
   */
  private synchronized void startReactorAsync() throws IOException, InterruptedException {
    // Acquire permit to continue execution of this method and spawn a new thread.
    reactorSemaphore.acquire();

    if (this.amqpsHandler != null) {
      this.reactor = Proton.reactor(this);

      new Thread(
              () -> {
                try {
                  reactor.run();

                  // Closing here should be okay. The reactor will only stop running if the
                  // connection is remotely
                  // or locally closed. The transport will attempt to receive/send a message and
                  // will get an exception
                  // causing it to create a new AmqpsIoTHubConnection.
                  close();

                  // Release the semaphore and make permit available allowing for the next reactor
                  // thread to spawn.
                  reactorSemaphore.release();
                } catch (Exception e) {
                  close();
                  reactorSemaphore.release();
                }
              })
          .start();
    } else {
      throw new IOException(
          "The Handler has not been initialized. Ensure that the AmqpsIotHubConnection is in an OPEN state by calling open().");
    }
  }
Ejemplo n.º 2
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 /**
  * @return if <0, then this pipe should be stopped. If ==0, it should not wait. If >0, if it
  *     should wait
  */
 int execute() {
   if (!lock.tryAcquire()) return 1; // currently being accessed
   Thread myThread = Thread.currentThread();
   int threadIndex = -1;
   for (int i = 0; i < threads.length; i++) {
     if (threads[i] == null) {
       threads[i] = myThread;
       threadIndex = i;
       break;
     }
     if (myThread != threads[i]) continue;
     threadIndex = i;
     break;
   }
   Signal signal;
   if (threadIndex < 0) {
     signal = dummySignal;
   } else {
     SignalImpl s = signals[threadIndex];
     s.threadIndex = threadIndex;
     s.signaled = false;
     signal = s;
   }
   boolean hasData;
   try {
     hasData = poll(signal, null);
   } finally {
     signal.signal();
     if (threadIndex < 0) lock.release();
   }
   return 0;
 }
 public void getReady() {
   try {
     ready.acquire();
     ready.release();
   } catch (InterruptedException e) {
     e.printStackTrace();
   }
 }
 public void run() {
   buffer.init();
   ready.release();
   for (int i = 0; i < 100; i++) {
     buffer.put(i);
   }
   buffer.finish();
 }
Ejemplo n.º 5
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 public void activate() {
   active = true;
   microphone.flush();
   speaker.flush();
   speaker.start();
   blocker.release();
   microphone.start();
   microphone.flush();
 }
Ejemplo n.º 6
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 @Override
 public boolean setConsumers(List<Consumer<S>> list, long time, TimeUnit unit)
     throws IllegalArgumentException {
   if (list == null) throw new IllegalArgumentException("consumer list is not set");
   for (Consumer<S> consumer : list) {
     if (consumer == null) throw new IllegalArgumentException("consumer is null");
   }
   try {
     if (!lock.tryAcquire(time, unit)) throw new IllegalArgumentException("can't lock producer");
   } catch (InterruptedException e) {
     return false;
   }
   try {
     return setConsumers(list);
   } catch (InterruptedException e) {
     logger.warn("setting consumer", e);
   } finally {
     lock.release();
   }
   return false;
 }
Ejemplo n.º 7
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 @Override
 @SuppressWarnings({"unchecked"})
 public void shutdown(long time, TimeUnit unit) {
   started = false;
   try {
     lock.tryAcquire(time, unit);
   } catch (InterruptedException e) {
     logger.warn("shutdown", e);
   }
   if (group != null) group.interrupt();
   consumers = new Consumer[0];
   consumerSeqs = new long[0];
   outUse = new AtomicLongArray(0);
   executor.shutdown();
 }
Ejemplo n.º 8
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  public void start() {
    inputs = new AtomicReferenceArray<>(0);
    outputs = inputs;
    freeReceptors = new CopyOnWriteArrayList<>();
    sequence = 0;
    finalSequence = 0;
    finalProduct = null;
    reuseReceptors = new ArrayList<>(0);
    executor = Executors.newSingleThreadExecutor();

    started = true;
    if (poolSize > 0) {
      group = new ThreadGroup("FatPipe");
      group.setMaxPriority(Thread.MAX_PRIORITY);
    }
    signals = new SignalImpl[ARBITARY_THREADS + poolSize];
    threads = new Thread[ARBITARY_THREADS + poolSize];
    startTime = System.currentTimeMillis();
    sleptTime = 0;
    toSleepTime = 0;

    for (int i = 0; i < poolSize; i++) {
      Thread t = new Thread(group, this, name + "-" + i);
      t.setDaemon(true);
      threads[i] = t;
      t.start();
      if (sleep == 0) t.setPriority(Thread.MAX_PRIORITY);
      else if (sleep < 0) t.setPriority(Thread.NORM_PRIORITY);
      else t.setPriority(Thread.MIN_PRIORITY);
    }
    for (int i = 0; i < signals.length; i++) {
      signals[i] = new SignalImpl(lock);
    }
    if (pool != null) pool.add(this);
    lock.release();
  }
Ejemplo n.º 9
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 /**
  * This should be called whenever state has changed that might cause the agent to do something.
  */
 protected void stateChanged() {
   stateChange.release();
 }
Ejemplo n.º 10
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 public void resume() {
   pause.release();
   isPaused = false;
   stateChanged();
 }
Ejemplo n.º 11
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    /** @param f Future that finished. */
    private void signalTaskFinished(GridFuture<Object> f) {
      assert f != null;

      sem.release();
    }
Ejemplo n.º 12
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 public void pickup() {
   pickup.release();
 }
Ejemplo n.º 13
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  protected void publishSupport() {
    DHTTransport transport = dht.getTransport();

    if (TESTING || !transport.isReachable()) {

      DHTTransportContact local_contact = transport.getLocalContact();

      // see if the rendezvous has failed and therefore we are required to find a new one

      boolean force =
          rendezvous_target != null
              && failed_rendezvous.containsKey(rendezvous_target.getAddress());

      if (rendezvous_local_contact != null && !force) {

        if (local_contact.getAddress().equals(rendezvous_local_contact.getAddress())) {

          // already running for the current local contact

          return;
        }
      }

      DHTTransportContact explicit =
          (DHTTransportContact) explicit_rendezvous_map.get(local_contact.getAddress());

      if (explicit != null) {

        try {
          pub_mon.enter();

          rendezvous_local_contact = local_contact;
          rendezvous_target = explicit;

          runRendezvous();

        } finally {

          pub_mon.exit();
        }
      } else {

        final DHTTransportContact[] new_rendezvous_target = {null};

        DHTTransportContact[] reachables = dht.getTransport().getReachableContacts();

        int reachables_tried = 0;
        int reachables_skipped = 0;

        final Semaphore sem = plugin_interface.getUtilities().getSemaphore();

        for (int i = 0; i < reachables.length; i++) {

          DHTTransportContact contact = reachables[i];

          try {
            pub_mon.enter();

            // see if we've found a good one yet

            if (new_rendezvous_target[0] != null) {

              break;
            }

            // skip any known bad ones

            if (failed_rendezvous.containsKey(contact.getAddress())) {

              reachables_skipped++;

              sem.release();

              continue;
            }
          } finally {

            pub_mon.exit();
          }

          if (i > 0) {

            try {
              Thread.sleep(1000);

            } catch (Throwable e) {

            }
          }

          reachables_tried++;

          contact.sendPing(
              new DHTTransportReplyHandlerAdapter() {
                public void pingReply(DHTTransportContact ok_contact) {
                  trace("Punch:" + ok_contact.getString() + " OK");

                  try {
                    pub_mon.enter();

                    if (new_rendezvous_target[0] == null) {

                      new_rendezvous_target[0] = ok_contact;
                    }
                  } finally {

                    pub_mon.exit();

                    sem.release();
                  }
                }

                public void failed(DHTTransportContact failed_contact, Throwable e) {
                  try {
                    trace("Punch:" + failed_contact.getString() + " Failed");

                  } finally {

                    sem.release();
                  }
                }
              });
        }

        for (int i = 0; i < reachables.length; i++) {

          sem.reserve();

          try {
            pub_mon.enter();

            if (new_rendezvous_target[0] != null) {

              rendezvous_target = new_rendezvous_target[0];
              rendezvous_local_contact = local_contact;

              log(
                  "Rendezvous found: "
                      + rendezvous_local_contact.getString()
                      + " -> "
                      + rendezvous_target.getString());

              runRendezvous();

              break;
            }
          } finally {

            pub_mon.exit();
          }
        }

        if (new_rendezvous_target[0] == null) {

          log(
              "No rendezvous found: candidates="
                  + reachables.length
                  + ",tried="
                  + reachables_tried
                  + ",skipped="
                  + reachables_skipped);

          try {
            pub_mon.enter();

            rendezvous_local_contact = null;
            rendezvous_target = null;

          } finally {

            pub_mon.exit();
          }
        }
      }
    } else {

      try {
        pub_mon.enter();

        rendezvous_local_contact = null;
        rendezvous_target = null;

      } finally {

        pub_mon.exit();
      }
    }
  }
Ejemplo n.º 14
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  protected DHTTransportContact getRendezvous(String reason, DHTTransportContact target) {
    DHTTransportContact explicit =
        (DHTTransportContact) explicit_rendezvous_map.get(target.getAddress());

    if (explicit != null) {

      return (explicit);
    }

    byte[] key = getPublishKey(target);

    final DHTTransportValue[] result_value = {null};

    final Semaphore sem = plugin_interface.getUtilities().getSemaphore();

    dht.get(
        key,
        reason + ": lookup for '" + target.getString() + "'",
        (byte) 0,
        1,
        RENDEZVOUS_LOOKUP_TIMEOUT,
        false,
        true,
        new DHTOperationAdapter() {
          public void read(DHTTransportContact contact, DHTTransportValue value) {
            result_value[0] = value;

            sem.release();
          }

          public void complete(boolean timeout) {
            sem.release();
          }
        });

    sem.reserve();

    DHTTransportContact result = null;

    if (result_value[0] != null) {

      byte[] bytes = result_value[0].getValue();

      try {
        ByteArrayInputStream bais = new ByteArrayInputStream(bytes);

        DataInputStream dis = new DataInputStream(bais);

        byte version = dis.readByte();

        if (version != 0) {

          throw (new Exception("Unsupported rendezvous version '" + version + "'"));
        }

        result = dht.getTransport().importContact(dis);

      } catch (Throwable e) {

        log(e);
      }
    }

    log(
        "Lookup of rendezvous for "
            + target.getString()
            + " -> "
            + (result == null ? "None" : result.getString()));

    return (result);
  }